Table 3 Mean vascular density and retinal thickness of the segmented regions.

From: Association between capillary congestion and macular edema recurrence in chronic branch retinal vein occlusion through quantitative analysis of OCT angiography

 

Total group

N = 76

Non-recurrence group

N = 54

Recurrence group

N = 22

p valuea

Mean vascular density of SCP

Total SCP VD (%)

41.8 ± 2.5

41.8 ± 2.6

41.6 ± 2.3

0.556

SCP-A VD (%)

36.6 ± 4.9

36.2 ± 4.5

37.5 ± 5.8

0.429

SCP-N VD (%)

44.3 ± 2.7

44.4 ± 2.8

44.1 ± 2.4

0.720

SCP-FAZ VD (%)

11.7 ± 2.0

11.6 ± 2.0

12.2 ± 1.7

0.113

SCP-C VDb (%)

56.3 ± 7.6

55.9 ± 8.1

57.1 ± 6.4

0.802

Mean vascular density of DCP

Total DCP VD (%)

42.8 ± 1.7

42.7 ± 1.8

42.8 ± 1.7

0.903

DCP-A VD (%)

40.3 ± 2.8

40.1 ± 2.9

40.9 ± 2.5

0.172

DCP-N VD (%)

44.9 ± 1.9

44.9 ± 1.8

44.9 ± 2.1

0.807

DCP-FAZ VD (%)

15.7 ± 5.7

15.2 ± 5.5

17.1 ± 6.1

0.276

DCP-C VD (%)

52.2 ± 4.3

51.8 ± 4.4

53.2 ± 4.0

0.183

Mean retinal thickness

Total MRT (μm)

255.8 ± 25.6

253.2 ± 25.3

262.3 ± 25.7

0.195

SCP-A MRT (μm)

233.0 ± 39.1

226.7 ± 38.2

248.4 ± 37.9

0.022

SCP-N MRT (μm)

265.4 ± 23.7

264.2 ± 23.2

268.5 ± 25.2

0.670

SCP-C MRTb (μm)

263.0 ± 40.5

254.3 ± 34.1

283.7 ± 47.4

0.011

DCP-A MRT (μm)

241.1 ± 38.2

234.6 ± 36.7

257.1 ± 37.9

0.015

DCP-N MRT (μm)

265.4 ± 22.8

265.1 ± 22.9

266.2 ± 23.0

0.995

DCP-C MRT (μm)

264.8 ± 30.2

259.5 ± 28.0

277.7 ± 32.1

0.006

  1. SCP superficial capillary plexus, VD vascular density, SCP-A abnormal region of superficial capillary plexus, SCP-N normal region of superficial capillary plexus, FAZ fovea avascular zone, SCP-FAZ foveal avascular zone of superficial capillary plexus, SCP-C capillary congestion of superficial capillary plexus, DCP deep capillary plexus, DCP-A abnormal region of deep capillary plexus, DCP-N normal region of deep capillary plexus, DCP-FAZ foveal avascular zone of deep capillary plexus, DCP-C capillary congestion of deep capillary plexus, MRT mean retinal thickness.
  2. Bold font indicates a statistically significant difference (a p value < 0.05) between the non-recurrence and recurrence groups.
  3. aAll values are the results of the Mann–Whitney U test.
  4. bStatistical values for 67 eyes (47 eyes in the recurrence group and 20 eyes in the non-recurrence group) in which SCP-C was observed.
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